CN109012899B - Planetary ball mill - Google Patents
Planetary ball mill Download PDFInfo
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- CN109012899B CN109012899B CN201811189029.3A CN201811189029A CN109012899B CN 109012899 B CN109012899 B CN 109012899B CN 201811189029 A CN201811189029 A CN 201811189029A CN 109012899 B CN109012899 B CN 109012899B
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- planetary ball
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- 238000000227 grinding Methods 0.000 claims abstract description 59
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 24
- 238000000498 ball milling Methods 0.000 claims description 16
- 238000010276 construction Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 230000004308 accommodation Effects 0.000 claims description 3
- 230000037237 body shape Effects 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005551 mechanical alloying Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000010671 solid-state reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/04—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container
- B02C17/08—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container with containers performing a planetary movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/24—Driving mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
A planetary ball mill is disclosed, comprising a first turntable, a second turntable and a plurality of planetary grinding drums, wherein the first turntable comprises a first turntable surface perpendicular to a central shaft and a first inclined surface positioned at the edge of the first turntable, the first turntable surface is provided with a first central hole and a plurality of first through holes which are symmetrical in center, the first turntable is vertically fixed to the central shaft through the first central hole, the second turntable arranged in parallel with the first turntable comprises a second turntable surface perpendicular to the central shaft and a second inclined surface positioned at the edge of the second turntable, the second inclined surface is adjacent to the second turntable surface and is parallel to the first inclined surface, the second turntable is vertically fixed to the central shaft through the second central hole, the first through holes and the second through holes are coaxially arranged, a transmission mechanism configured to transmit power comprises a first transmission member fixed on the central shaft and a second transmission member fixed on a connecting shaft, and the first transmission member and the second transmission member are mutually matched to enable the connecting shaft to rotate at a speed different from the rotating speed of the central shaft.
Description
Technical Field
The invention relates to the fields of crushing, grinding, mechanical force activation, mechanochemical and mechanical alloy processing, in particular to a planetary ball mill.
Background
Ball mills have been known as conventional grinding equipment for over 100 years. It is used as important equipment for refining and pulverizing solid material, and is widely used in metallurgical, chemical, cement, ceramic, building, electric power, medicine, national defense industry and other departments. Especially the ore dressing department in metallurgical industry, the ore grinding operation is very important.
The planetary ball mill grinding cylinder can be horizontally arranged or vertically arranged on the common turntable. The main difference between the two is that the movement modes of the grinding drums are different. The cylinder body of the common ball mill only rotates around a fixed central shaft, the planetary grinding cylinder moves in a complex plane, on one hand, the motor drives the common turntable to rotate, and the grinding cylinder arranged on the common turntable rotates along with the common turntable, so that the planetary grinding cylinder moves in a revolution and a connection manner; on the other hand, the grinding cylinder also rotates around the central shaft of the grinding cylinder to move relatively under the action of the transmission of the gears or the triangular belts. This planar motion of the drum, which has both revolution and rotation, is referred to as planetary motion. The planetary motion of the grinding cylinder is a basic sign of the planetary ball mill as distinguished from the common ball mill. It can be regarded as a new model developed by combining a common ball mill with a centrifugal ball mill.
The planetary high-energy ball mill can crush and grind materials and is widely used in the fields of metallurgy, mineral products, chemical industry, medicine, geology and the like. The planetary ball mill is provided with a plurality of ball milling tanks on the same main shaft turntable, and each ball milling tank rotates, namely, performs planetary motion while revolving around the main shaft. Compared with other ball mills, the ball mill has higher impact force and impact frequency, can better crush and weld powder, is an important device for a mechanical alloying method in material preparation, and is a complex physicochemical process for alloying element atomic scale by repeatedly deforming, cold welding, crushing and refining the material and continuously exposing fresh surfaces by utilizing long-time high-energy impact and rolling between the material, the grinding ball and the ball milling tank in the material preparation process, so that each element atom is mutually diffused or subjected to solid state reaction.
The planetary grinding cylinder is horizontally arranged on the large turntable which is arranged perpendicular to the ground plane, and when in operation, the planetary grinding cylinder not only rotates per se, but also revolves along with the large turntable to form planetary motion. In the moving process, the ball milling tank has no fixed bottom surface, and the grinding balls and the grinding materials in the grinding cylinder are subjected to the combined action of revolution centrifugal force, rotation centrifugal force and gravity in a vertical plane. When the machine rotates, the stress of each point in the tank is continuously changed in size and direction, so that the grinding balls and the grinding materials are collided and extruded violently in high-speed operation, and the grinding efficiency and the grinding effect are greatly improved. Particularly, the ball milling tank is in a horizontal arrangement mode, and has no fixed bottom surface due to autorotation, so that the phenomenon of bottom formation of a part of raw materials is avoided.
In recent years, due to the increase of energy cost and the decrease of ore grade, the reduction of construction investment and production cost is a serious problem facing the mine industry of various countries in the world, the adoption of high-efficiency large-scale equipment is a main trend of the construction of modern mineral processing plants, and the large-scale, continuous feeding and discharging and vibration and noise reduction of the ball mill are defects in the prior art.
The above information disclosed in the background section is only for enhancement of understanding of the background of the invention and therefore may contain information that does not form the prior art that is already known in the country to a person of ordinary skill in the art.
Disclosure of Invention
In view of the above, the present invention aims to overcome the drawbacks of the prior art, and to provide a planetary ball mill which can be large-sized and remarkably improve crushing efficiency, operate stably, remarkably reduce vibration and noise, and thereby effectively prolong the service life of equipment.
In order to achieve the above object, the present invention provides a planetary ball mill comprising:
a frame;
a central shaft rotatably connected to the frame through a bearing;
a turntable device configured to be rotatable about the central axis, the turntable device comprising,
a first turntable including a first turntable surface perpendicular to the central axis and a first inclined surface located at an edge of the first turntable, the first inclined surface being adjacent to the first turntable surface, the first turntable surface being provided with a first central hole and a plurality of first through holes being centrally symmetrical, the first turntable being vertically fixed to the central axis via the first central hole,
a second turntable arranged parallel to the first turntable, the second turntable including a second turntable surface perpendicular to the central axis and a second inclined surface at an edge of the second turntable, the second inclined surface being adjacent to the second turntable surface and parallel to the first inclined surface, the second turntable surface being provided with a second central hole and a plurality of second through holes being centrally symmetrical, the second turntable being vertically fixed to the central axis via the second central hole, wherein the first through holes and the second through holes are coaxially arranged;
a plurality of planetary grinding drums rotatably disposed between the first turntable surface and the second turntable surface via first through holes and second through holes, the planetary grinding drums comprising,
a connecting shaft connected with the transmission mechanism to enable the planetary mill cylinder to rotate while revolving, wherein the connecting shaft is rotatably connected with the second turntable through two shaft sleeves,
the grinding cylinder body is connected with the connecting shaft and is rotatably arranged in the first through hole and the second through hole through a bearing, the grinding cylinder body is provided with a feeding hole for inputting materials and a discharging hole for discharging materials,
the transmission mechanism is configured to transmit power and comprises a first transmission part fixed on the central shaft and a second transmission part fixed on the connecting shaft, and the first transmission part and the second transmission part are matched with each other so that the connecting shaft rotates at a speed different from the rotating speed of the central shaft.
In the planetary ball mill, two of the shaft sleeves are fixed to the second turntable such that the connecting shaft is parallel to the central shaft.
In one planetary ball mill, the number of planetary grinding drums is 3, 4 or 6, and the transmission mechanism comprises differential gears.
In a planetary ball mill, the grinding cylinder body comprises a grinding cavity for ball milling and a collecting cavity for collecting materials after ball milling, and a plurality of lining plates and a grinding surface formed by splicing bottom plates are arranged in the grinding cavity.
In the planetary ball mill, the lining plate and/or the bottom plate are/is provided with protrusions, a plurality of slits are arranged between the bottom plates, and the ground materials enter the collecting cavity through the slits.
In the planetary ball mill, the grinding surface is a cup-shaped grinding surface, and the protrusions are hemispherical structures.
In the planetary ball mill, the first rotary disc surface and the second rotary disc surface are respectively provided with a first inner wall and a second inner wall which are coaxial, and the mill cylinder body is tangent to the first inner wall and the second inner wall.
In the planetary ball mill, the first transmission member and/or the second transmission member comprises a pulley, which is driven via a belt.
In the planetary ball mill, the planetary grinding cylinder is integrally formed.
In the planetary ball mill, the length of the connecting shaft is longer than that of the milling cylinder body, and the connecting shaft is of a hollow structure.
In the planetary ball mill, the frame comprises,
the first layer of rack is fixedly arranged at the left upper part of the second layer of rack in a bolt or screw mode, and a driving mechanism is fixedly arranged above the first layer of rack;
the second layer of frame, it sets up to frame construction, sets up in the bottommost of whole frame, the right side of second layer of frame is provided with ball-milling body accommodation space with ball-milling body shape assorted.
In the planetary ball mill, four elastic support legs are arranged on the lower surface of the second layer of frame.
In the planetary ball mill, bearing seats are fixedly arranged on the first layer of frame and the second layer of frame, and the central shaft and the hollow connecting shaft are respectively and rotatably connected to the first layer of frame and the second layer of frame through the bearing seats.
The invention has the beneficial effects that:
the first turntable and the second turntable of the planetary ball mill enable the planetary ball mill to revolve stably and have small vibration and noise on the basis of large size, the planetary grinding cylinder rotatably arranged between the surfaces of the first turntable and the second turntable through the first through hole and the second through hole rotates along with the revolution of the first turntable and the second turntable, the first transmission piece and the second transmission piece are mutually matched to enable the connecting shaft to rotate at a speed different from the rotating speed of the central shaft, and the turntable device can be large in size and stable in operation and has small vibration and noise and realizes revolution and differential rotation through one power source.
Drawings
Fig. 1 is a schematic structural view of a planetary ball mill according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a planetary ball mill according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a schematic structural view of a planetary ball mill according to an embodiment of the present invention, as shown in the drawing, a planetary ball mill comprising:
a frame 100;
a central shaft 200 rotatably connected to the frame 100 through a bearing;
a turntable assembly 300 configured to be rotatable about said central axis 200, said turntable assembly 300 comprising,
a first rotating disc 310, the first rotating disc 310 comprising a first rotating disc surface 311 perpendicular to the central axis 200 and a first inclined surface 312 at an edge of the first rotating disc 311, the first inclined surface 312 abutting the first rotating disc surface 311, the first rotating disc surface 311 being provided with a first central hole 313 and a plurality of first through holes 314 of central symmetry, the first rotating disc 310 being vertically fixed to the central axis 200 via the first central hole 313,
a second turntable 320, the second turntable 320 being arranged in parallel to the first turntable 310 including a second turntable surface 321 perpendicular to the central axis 200 and a second inclined surface 322 at an edge of the second turntable 320, the second inclined surface 322 being adjacent to the second turntable surface 321 and being parallel to the first inclined surface 312, the second turntable surface 321 being provided with a second central hole 323 and a plurality of central symmetrical second through holes 324, the second turntable 320 being vertically fixed to the central axis 200 via the second central hole 323, wherein the first through holes 314 and the second through holes 324 are coaxially arranged;
a plurality of planetary mill barrels 400 rotatably disposed between the first turntable surface 311 and the second turntable surface 321 via the first through holes 314 and the second through holes 324, the planetary mill barrels 400 including,
a connection shaft 410 connected to the transmission mechanism 430 such that the planetary mill tube 400 rotates while revolving, the connection shaft 410 being rotatably connected to the second turntable 320 via two shaft sleeves 411,
a grinding cylinder body 420, the grinding cylinder body 420 connected with the connecting shaft 410 is rotatably arranged in the first through hole 314 and the second through hole 324, and the grinding cylinder body 420 is provided with a material inlet 422 for inputting materials and a material outlet 421 for discharging materials;
the transmission mechanism 430 is configured to transmit power, the transmission mechanism 430 includes a first transmission member 431 fixed to the central shaft 200 and a second transmission member 432 fixed to the connection shaft 410, and the first transmission member 431 and the second transmission member 432 cooperate with each other to rotate the connection shaft 410 at a speed different from the rotational speed of the central shaft.
In a preferred embodiment of the planetary ball mill according to the present invention, two of the shaft sleeves 411 are fixed to the second turntable 320 such that the connection shaft 410 is parallel to the central shaft 200.
In a preferred embodiment of the planetary ball mill according to the present invention, the number of planetary grinding drums 400 is 3, 4 or 6, and the transmission mechanism 430 includes a differential gear.
In a preferred embodiment of the planetary ball mill according to the present invention, the grinding cylinder body 420 includes a grinding chamber 423 for ball milling and an aggregate chamber 424 for collecting the ball milled material, and a plurality of lining plates 425 and a base plate 426 are disposed in the grinding chamber 423 to form a grinding surface 429.
In a preferred embodiment of the planetary ball mill according to the present invention, the lining plate 425 and/or the bottom plate 426 have protrusions 428, and a plurality of slits 427 are provided between the bottom plates, through which the milled material enters the material collection chamber 424.
In a preferred embodiment of the planetary ball mill according to the present invention, the grinding surface is a cup-shaped grinding surface, and the protrusions 428 are hemispherical structures.
In a preferred embodiment of the planetary ball mill according to the present invention, the first turntable surface 311 and the second turntable surface 321 are respectively provided with a first inner wall and a second inner wall which are coaxial, and the mill cylinder body 420 is tangential to the first inner wall and the second inner wall.
In a preferred embodiment of the planetary ball mill according to the invention, the first and/or second transmission members 431, 432 comprise a pulley, which is driven via a belt.
In a preferred embodiment of the planetary ball mill according to the present invention, the planetary mill cylinder 400 is integrally formed.
In a preferred embodiment of the planetary ball mill according to the present invention, the length of the connecting shaft 410 is longer than that of the mill cylinder body 420, and the connecting shaft 410 has a hollow structure.
In the planetary ball mill, the frame comprises,
the first layer of rack is fixedly arranged at the left upper part of the second layer of rack in a bolt or screw mode, and a driving mechanism is fixedly arranged above the first layer of rack;
the second layer of frame, it sets up to frame construction, sets up in the bottommost of whole frame, the right side of second layer of frame is provided with ball-milling body accommodation space with ball-milling body shape assorted.
In the planetary ball mill, four elastic support legs are arranged on the lower surface of the second layer of frame.
In the planetary ball mill, bearing seats are fixedly arranged on the first layer of frame and the second layer of frame, and the central shaft and the hollow connecting shaft are respectively and rotatably connected to the first layer of frame and the second layer of frame through the bearing seats.
For a further understanding of the invention, reference is made to the following examples for further illustration.
Fig. 2 is a schematic structural view of a planetary ball mill according to an embodiment of the present invention, wherein the first turntable 310 and the second turntable 320 are in a truncated cone structure, and the protrusions 428 are in a hemispherical structure. A plurality of fixing members 315 connect the first inclined surface 312 and the second inclined surface 322, a gap between the first inclined surface 312 and the second inclined surface 322 forms a discharge cavity, and the discharge port 421 is located in the discharge cavity. The first rotating disc surface 311 and the second rotating disc surface 321 are respectively provided with a first inner wall and a second inner wall which are coaxial, and the grinding cylinder body 420 is tangential to the first inner wall and the second inner wall.
Industrial applicability
The planetary ball mill of the invention can be manufactured and used in the crushing field.
Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described specific embodiments and application fields, and the above-described specific embodiments are merely illustrative, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous forms of the invention without departing from the scope of the invention as claimed.
Claims (10)
1. A planetary ball mill, comprising:
a frame;
a central shaft rotatably connected to the frame through a bearing;
a turntable device configured to be rotatable about the central axis, the turntable device comprising,
a first turntable including a first turntable surface perpendicular to the central axis and a first inclined surface located at an edge of the first turntable, the first inclined surface being adjacent to the first turntable surface, the first turntable surface being provided with a first central hole and a plurality of first through holes being centrally symmetrical, the first turntable being vertically fixed to the central axis via the first central hole,
a second turntable arranged parallel to the first turntable, the second turntable including a second turntable surface perpendicular to the central axis and a second inclined surface at an edge of the second turntable, the second inclined surface being adjacent to the second turntable surface and parallel to the first inclined surface, the second turntable surface being provided with a second central hole and a plurality of second through holes being centrally symmetrical, the second turntable being vertically fixed to the central axis via the second central hole, wherein the first through holes and the second through holes are coaxially arranged;
a plurality of planetary grinding drums rotatably disposed between the first turntable surface and the second turntable surface via first through holes and second through holes, the planetary grinding drums comprising,
a connecting shaft connected with the transmission mechanism to enable the planetary mill cylinder to rotate while revolving, wherein the connecting shaft is rotatably connected with the second turntable through two shaft sleeves,
the two shaft sleeves are fixed on the second turntable so that the connecting shaft is parallel to the central shaft;
the grinding cylinder body is connected with the connecting shaft and is rotatably arranged in the first through hole and the second through hole through a bearing, and the grinding cylinder body is provided with a material inlet for inputting materials and a material outlet for discharging materials; the grinding cylinder body comprises a grinding cavity for ball milling and a collecting cavity for collecting materials after ball milling, wherein a plurality of grinding surfaces formed by splicing a lining plate and a bottom plate are arranged in the grinding cavity; the lining plate and/or the bottom plate are provided with bulges, a plurality of slits are arranged between the bottom plates, and the ground materials enter the collecting cavity through the slits;
the transmission mechanism is configured to transmit power and comprises a first transmission part fixed on the central shaft and a second transmission part fixed on the connecting shaft, and the first transmission part and the second transmission part are matched with each other so that the connecting shaft rotates at a speed different from the rotating speed of the central shaft.
2. A planetary ball mill according to claim 1, wherein: the number of the planetary grinding drums is 3, 4 or 6, and the transmission mechanism comprises differential gears.
3. The planetary ball mill according to claim 1, wherein: the grinding surface is a cup-shaped grinding surface, and the bulges are of a hemispherical structure.
4. A planetary ball mill according to any one of claims 1-2, wherein: the first rotary disc surface and the second rotary disc surface are respectively provided with a first inner wall and a second inner wall which are coaxial, and the grinding cylinder body is tangent to the first inner wall and the second inner wall.
5. A planetary ball mill according to any one of claims 1-2, wherein: the first transmission member and/or the second transmission member comprises a pulley which is driven via a belt.
6. A planetary ball mill according to claim 1, wherein: the planetary mill cylinder is integrally formed.
7. A planetary ball mill according to claim 1, wherein: the length of the connecting shaft is greater than that of the grinding cylinder body, and the connecting shaft is of a hollow structure.
8. A planetary ball mill according to claim 1, wherein: the machine frame comprises a machine frame body and a machine frame,
the first layer of rack is fixedly arranged at the left upper part of the second layer of rack in a bolt or screw mode, and a driving mechanism is fixedly arranged above the first layer of rack;
the second layer of frame, it sets up to frame construction, sets up in the bottommost of whole frame, the right side of second layer of frame is provided with ball-milling body accommodation space with ball-milling body shape assorted.
9. A planetary ball mill according to claim 8, wherein: four elastic support legs are arranged on the lower surface of the second layer of frame.
10. A planetary ball mill according to claim 8, wherein: bearing seats are fixedly arranged on the first-layer rack and the second-layer rack, and the central shaft and the connecting shaft are respectively and rotatably connected to the first-layer rack and the second-layer rack through the bearing seats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811189029.3A CN109012899B (en) | 2018-10-12 | 2018-10-12 | Planetary ball mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811189029.3A CN109012899B (en) | 2018-10-12 | 2018-10-12 | Planetary ball mill |
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| Publication Number | Publication Date |
|---|---|
| CN109012899A CN109012899A (en) | 2018-12-18 |
| CN109012899B true CN109012899B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811189029.3A Active CN109012899B (en) | 2018-10-12 | 2018-10-12 | Planetary ball mill |
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2018
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| CN1846858A (en) * | 2006-04-27 | 2006-10-18 | 扬州群友粉体材料科技有限公司 | Large continuous planetary ball mill |
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| CN109012899A (en) | 2018-12-18 |
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